Madalin Giorgetta, a certified personal trainer with almost 800,000 followers on Instagram, knows a thing or two about putting on muscle. In her impressive booty transformation pics, it's clear she knows how to target those gains in her glutes. "So many people think that the best way to grow your booty is through squats, when in actual fact, the best way to grow your booty is through hip thrusts, glute bridges, and a mix of abduction exercises involving cables and resistance bands," she told POPSUGAR.